This paper proposes a new research framework for operation adequacy of power systems with large-scale integration of intermittent renewable energy generation. The relationship between adequacy and stability of power systems is discussed

as is that between operation adequacy and installed capacity adequacy. The-state-of-the-art of research work on operation adequacy is reviewed

followed by the extraction of important factors and formalization description of the problem

as well as the expansion of the research scope and ideas. It is also emphasized that the power system adequacy should be guaranteed by the adequacy of related external links

such as primary energy

transmission

market competition and environment

etc.